Ingredients
Method
Preparing the Strawberry Filling
- Using a fork, mix the cornstarch and water until dissolved.
- Warm strawberries and sugar over medium heat in a saucepan, stirring often and crushing some strawberries.
- Bring the mixture to a simmer, then stir in the cornstarch mixture and simmer for 5 minutes.
- Remove from heat, mix in lemon zest, and let cool completely.
Baking the Cupcakes
- Preheat the oven to 350°F (175°C). Line a 12-cup muffin pan with cupcake liners.
- In a large bowl, whisk together flour, baking powder, baking soda, and salt.
- In another bowl, whisk melted butter and sugar together until gritty.
- Add egg whites, sour cream, milk, and vanilla, mixing until combined.
- Gradually mix wet and dry ingredients until mostly smooth.
- Fill liners 2/3 full with batter and bake for 20–22 minutes, or until a toothpick comes out clean.
- Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Assembling the Cupcakes
- Once cool, carve out a small cone from the center of each cupcake to fill with the strawberry mixture.
- Whip heavy cream with sugar and remaining strawberry filling.
- Frost each cupcake and garnish with sliced strawberries.
Notes
Serve the cupcakes chilled or at room temperature. Top with powdered sugar or a sprig of mint for a gourmet touch. Store decorated cupcakes in the fridge for up to five days.